Apparatus for producing perfect combustion in furnaces.



No. 810,163. PATENTED JAN. 16, 1906.

H. LUOKENBAOH.

APPARATUS FOR PRODUCING PERFECT COMBUSTION IN FURNACES; APPLICATION FILED DEO.8,1904.

UNITED STATES PATENT OFFICE.

HARRY LUCKENBACH, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR TO WILLIAM H. KELLY, OF SAN FRANCISCO, CALIFORNIA.

Specification of Letters Patent.

Patented Jan. 16, 1906.

Application filed December 8, 1904. Serial No. 236,060-

1'0 (Ll/L whom, it may concern:

Be it known that I, HARRY LUOKENBAOH, a citizen of the United States, residing at San Francisco, in the county of San Francisco and State of California, have invented certain new and useful Improvements in Apparatus for Producing Perfect Combustion in Furnaces, of which the following is a specification.

My invention relates to apparatus having for its object a perfect combustion of fuel, either liquid or solid, in furnaces, and resides in the novel construction, combination, and arrangement of parts for this purpose hereinafter fully specified, and particularly pointed out in the claims.

In the accompanying drawings, Figure 1 is a longitudinal vertical section of a boiler furnace to which my invention is applied for the purpose of producing perfect combustion of liquid fuel. Figs. 2 and 3 are perspective views of the two halves of the superheatingjacket, and Fig. 4 is a perspective view of the superheating-coil detached.

Referring to the drawings, 1 represents a furnace, 2 the boiler therein, and 3 the steamdome. From said dome steam is conducted by a pipe 4 to a coil 22, which is inclosed in the two halves 23 24 of a cast-iron jacket 25, said jacket and coil being laid upon the bottom of the fire-box. The steam after being highly heated in said coil is conducted to the oil-burner 26, producing a perfect combustion thereof. The two halves of the jacket are provided with registerin pins 11 and sockets 12, by which said ha ves are maintained in their proper relative locations around the steam-coil. By this means, first, the steam-coil is prevented being burned out by the heat of the fire, while receiving a high degree of heat to highly heat the steam, and, secondly, the jacket and coil are permitted independent expansion.

It will be understood that the channels or recesses 27 in the two halves of the casting for receiving the pipe are made sufficiently larger than the pipe to permit the pipe to expand freely therein when subjected to a high degree of heat.

A very important advantage attendant upon this construction is that any defective pipe can be readily removed and replaced by a perfect pipe in the jacket without destroying or impairing the jacket and disturbing the general construction of the apparatus.

I claim 1. In an apparatus of the character described, the combination with a furnace, and an oil-burner arranged to direct the flames into said furnace, of a coil of pipe, a pipe for supplying steam to said coil, and a pipe for supplying steam from said coil to the burner, of a cast-iron casing for said coil formed in two sections one of said sections having a tortuous channel to receive said coil, corresponding in general form and dimensions with said coil, but sufliciently larger than the coil to permit the latter 'to expand freely therein, when subjected to a high degree of heat, said casing being placed in proximity to, but to one side of, and out of direct contact with, the flames from the burner, the whole of the coil of pipe between the entrance of the supply-pipe and the egress of the pipe to the burner being inclosed within said casing, substantially as described.

2. In an apparatus of the character described, the combination with a furnace, and an oil-burner arranged to direct the flames into said furnace, of a coil of pipe, a pipe for supplying steam to said coil, and a pipe for supplying steam from said coil to the burner, of a cast-iron casing for said coil formed in two sections each of said sections having a tortuous channel to receive said coil, corresponding in general form and dimensions with said coil, but sufficiently larger than the coil to permit the latter to expand freely therein, when subjected to a high degree of heat, said casing being placed in proximity to, but to each side of, and out of direct contact with, the flames from the burner, the whole of the coil of pipe between the entrance of the supply-pipe and the egress of the pipe to the burner being inclosed within said casing, substantially as described.

In witness whereof I have hereunto set my hand in the presence of two subscribing witnesses.

HARRY LUCKENBACI'I.

Witnesses FRANCIS M. WRIGHT, Bnssrn GORFINKEL. 

